# US 4,394,941 A · Fluid dispenser

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- Number: US 4,394,941 A
- Document ID: US4394941A
- Status: Granted
- Kind: A
- Application number: 06/297,691
- Filed: 1981-08-31
- Granted: 1983-07-26
- Earliest claimed: 1981-08-31
- Assignees: Thomas L. Shannon, Jr.
- Inventors: Giuseppe Recine
- Web page: https://patentgrep.com/patent/US4394941A

## CPC

- G01F 11/18: for fluent solid material
- A47G 19/34: dispensing a certain quantity of powdered or granulated foodstuffs, e.g. sugar
- A47K 5/1204: {by means of a rigid dispensing chamber and pistons}
- G01F 11/16: for liquid or semiliquid
- G01F: MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- A47G: HOUSEHOLD OR TABLE EQUIPMENT (book-ends A47B5/00; knives B26B)
- A47K: SANITARY EQUIPMENT; ACCESSORIES THEREFOR, e.g. TOILET ACCESSORIES

## Abstract

A fluid dispenser includes a cylindrical body which is open at one end and which has an opening in its side wall adjacent the other end to communicate with fluid material inside a container in which the dispenser is mounted. A second cylinder having openings in opposed side walls is slidably mounted within the body and is connected to a plunger for axially moving the inner cylinder which is normally biased inwardly so that fluid material may pass into the interior of the inner cylinder. As the plunger is activated, a closure member first slides under the opening in the cylindrical body to prevent additional material from leaving the container. Further movement of the plunger pushes the end of the inner cylinder out of the body of the dispenser to expose the opening in the side wall to thereby dispense the fluid material which had been in the interior thereof.

## Claims

### Claim 1

A dispenser for dispensing fluent material comprising:
an outer tubularly shaped body member including an opening in a side wall adjacent the first end thereof and having a second open end;
an inner tubularly shaped member within said outer member and axially movable with respect thereto, both ends of said inner member being closed, a first opening in a side wall of said inner member adjacent the first end thereof and a second opening in an opposite side wall adjacent the second end thereof;
means for biasing said inner member toward the first end of said outer member to a fill position wherein the opening of said outer member coincides with said first opening of said inner member and wherein the portion of said inner member having said second opening is within said outer member;
a plunger means extending from the first end of said outer member and being connected to said inner member for moving said inner member to a dispensing position wherein the portion of said inner member having said second opening extends outward beyond the second end of said outer member, and
a closure means for closing communication between the opening in said outer member and said first opening in said inner member prior to movement of said inner member.

### Claim 2 (depends on 1)

The dispenser as claimed in claim 1 wherein said closure means is a slide closure carried by said plunger means.

### Claim 3 (depends on 1)

The dispenser as claimed in claim 1 wherein said inner and outer tubular members are cylindrically shaped.

### Claim 4 (depends on 3)

The dispenser as claimed in claim 3 further including an O-ring located between said inner and outer members adjacent said second ends thereof.